I remember walking over the Brecon Beacons and two Hawks and a Tornado flew through the valley beneath us. Absolutely awesome!
Where did you read this? From watching various videos it sounds like it's just one short bang.

Jet Age Museum @JetAgeMuseum
BBC News - Typhoon sonic boom...It was ATC @GlosAirport who told the helicopter pilot he was using the wrong code!
Go to snowdonia little bit of climbing and you can watch them flying past from above and very close
including big transport planes![]()

I even saw a B1B over Ben Nevis once - think it was part of some big joint exercise between USAF/RAF.I believe so. On the slower runs we could see the crews hands moving and heads bobbing about. On the fast runs the shock nearly made us fall down the mountainsides!isn't that the Mach loop teritory ? I am sure there is a geeser on these forums that takes fantastic shots of fighter jets going through there at high speeds ? I could be mistaken though ?
I remember walking over the Brecon Beacons and two Hawks and a Tornado flew through the valley beneath us. Absolutely awesome!
So did just one of them go supersonic then? I can't believe they both broke the sound barrier at the exact same second
EDIT: Actually, I guess I understand....the sonic boom is being produced continuously. Was always confused about whether it only happened at the point the plane broke the barrier.